EP2771923B1 - Connecting pole for a rechargeable battery, rechargeable battery housing and machine for producing a connecting pole - Google Patents

Connecting pole for a rechargeable battery, rechargeable battery housing and machine for producing a connecting pole Download PDF

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Publication number
EP2771923B1
EP2771923B1 EP12787660.5A EP12787660A EP2771923B1 EP 2771923 B1 EP2771923 B1 EP 2771923B1 EP 12787660 A EP12787660 A EP 12787660A EP 2771923 B1 EP2771923 B1 EP 2771923B1
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EP
European Patent Office
Prior art keywords
connecting pole
circumferential
pole
section
projections
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Active
Application number
EP12787660.5A
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German (de)
French (fr)
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EP2771923A1 (en
Inventor
Anne-Laure Ledoux
Peter Streuer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Clarios Germany GmbH and Co KG
Original Assignee
Johnson Controls Autobatterie GmbH and Co KGaA
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Publication of EP2771923A1 publication Critical patent/EP2771923A1/en
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    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/543—Terminals
    • H01M50/552—Terminals characterised by their shape
    • H01M50/561—Hollow metallic terminals, e.g. terminal bushings
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/10—Primary casings; Jackets or wrappings
    • H01M50/172—Arrangements of electric connectors penetrating the casing
    • H01M50/174—Arrangements of electric connectors penetrating the casing adapted for the shape of the cells
    • H01M50/176—Arrangements of electric connectors penetrating the casing adapted for the shape of the cells for prismatic or rectangular cells
    • H—ELECTRICITY
    • H01—ELECTRIC ELEMENTS
    • H01M—PROCESSES OR MEANS, e.g. BATTERIES, FOR THE DIRECT CONVERSION OF CHEMICAL ENERGY INTO ELECTRICAL ENERGY
    • H01M50/00—Constructional details or processes of manufacture of the non-active parts of electrochemical cells other than fuel cells, e.g. hybrid cells
    • H01M50/50—Current conducting connections for cells or batteries
    • H01M50/531—Electrode connections inside a battery casing
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
    • Y02E60/00—Enabling technologies; Technologies with a potential or indirect contribution to GHG emissions mitigation
    • Y02E60/10—Energy storage using batteries
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/53—Means to assemble or disassemble
    • Y10T29/5313—Means to assemble electrical device
    • Y10T29/53135—Storage cell or battery

Definitions

  • the invention relates to a terminal pole for a rechargeable battery according to the preamble of claim 1.
  • the invention further relates to an accumulator housing or a part thereof with at least one such terminal pole as well as a method for producing such a terminal pole according to claim 6.
  • Connection poles for accumulators are used to make electrical contact with the accumulator with electrical devices that are to be supplied with power by the accumulator.
  • the corresponding pole terminals are screwed to two terminal poles of the starter battery.
  • a connection pole for an accumulator is from the DE 42 41 393 C2 known.
  • the local terminal pole has a base part with circumferential grooves, which can be used in a housing of the accumulator.
  • the circumferential grooves together with a groove filling plastic a labyrinth seal.
  • the pamphlets DE 10 2010 010 772 A1 and EP 1 768 201 A2 each relate to a terminal pole for an accumulator.
  • the connection poles known from this prior art each have a fixing section with a labyrinth section, wherein in the labyrinth section a plurality of circumferential Projections are formed. These circumferential projections each have a hook-shaped profile.
  • the invention is based on the object, a terminal pole, which is suitable for forming a labyrinth seal with the plastic to specify, which is easier and cheaper to produce.
  • section refers to sections in the longitudinal direction of the terminal pole, d. H . in the direction of in FIG. 1 illustrated longitudinal axis L.
  • the invention has the advantage that a terminal pole can be specified with a labyrinth section whose circumferential projections can be produced with simpler and thus more cost-effective production steps. While it is necessary in the connection pole mentioned above, the projections with the hook-shaped profile z. B. by rolling or rolling the corresponding areas of the terminal pole, can be dispensed with such complex measures in the terminal pole according to the invention. Thus, simpler and less expensive tools can be used, in particular a crimping tool for the pairwise flanging of two adjacently arranged circumferential projections towards each other.
  • the crimping tool can be operated substantially free of longitudinal force, since the corresponding crimping forces cancel each other substantially.
  • time is saved in the production of the Anschlußpols compared to the known manufacturing process. All this leads to lower production costs.
  • undercuts can be easily produced on the outer wall of the terminal pole, which form an optimal barrier against the passage of acid from the accumulator after embedding the terminal pole in the injection molding of the accumulator.
  • the flanged portion of the circumferential projection may be evenly crimped or flattened unevenly, for. B. wavy. Particularly favorable is a uniformly flanged portion of the circumferential pre-jump, which forms a continuous ring around the outer wall of the terminal pole.
  • the invention can be advantageously realized both at a terminal pole for a car battery and for a terminal pole of a commercial vehicle battery (for commercial vehicles).
  • the or the circumferential projections in the labyrinth section can in principle be realized with different profiles.
  • As a basic form for the circumferential projection is called a ring-like shape.
  • One or more of the circumferential projections may also have a hook-shaped profile.
  • the terminal pole it is advantageous to initially produce the circumferential projections without undercuts.
  • the at least two adjacent mutually arranged circumferential projections are otherwise undercut, ie apart from the flanged area.
  • the terminal pole can also be produced in a casting process with initially undercut-free circumferential projections.
  • at least two circumferential projections arranged adjacent to one another can be flanged in pairs in a direction pointing toward one another, whereby a respective undercut is formed there.
  • one or two further circumferential projections are arranged in the labyrinth section.
  • the provision of the one or two further circumferential projections has the advantage that the sealing effect of the labyrinth is improved. It has been found that an excessive number of circumferential projections does not lead to any further improvement, but only increases the production costs and reduces the stability of the circumferential projections. It is advantageous if the distance between two adjacent circumferential projections in a terminal pole of conventional design is in the range of 0.8 to 2 mm, wherein a value of about 1.5 mm has been found to be optimal. The distances should not be too large to ensure a secure and robust embedding of the terminal pole in the material of the housing part.
  • Too small distances deteriorate the degree of filling of the grooves formed between the circumferential projections with the injection molding of the housing part, in particular when polypropylene (PP) is used as the material. Too small distances between the circumferential projections are in this case unfavorable for the inflow of the injection molding in the grooves.
  • PP polypropylene
  • the terminal pole in the attachment portion between the terminal portion and the labyrinth portion on a circumferential projection with a toothing on the outer circumference By means of the toothing can advantageously be realized against rotation, which prevents unwanted rotation of the terminal pole in the material of the accumulator housing.
  • the toothing has a number of teeth in the range from 6 to 9. In particular, it has been found that a number of 8 teeth is particularly advantageous and gives a good compromise between the mechanical stability of the teeth of the terminal pole and the durability of the terminal pole in the plastic material of the accumulator housing. An excessive number of teeth inevitably leads to a reduction in the dimensions of the individual teeth, whereby the stability of the individual teeth decreases. Too small a number of teeth leads to a decrease in the effectiveness of the anti-rotation, since the durability of the terminal pole decreases in the plastic material of the accumulator.
  • the invention further relates to an accumulator housing or part thereof with at least one connection pole of the type described above, wherein the at least one terminal pole is embedded with its attachment portion by means of injection molding in a Akkumulatorgephinuseteil.
  • the invention further relates to a machine for producing a terminal pole of the type described above.
  • the machine is adapted to form on a blank by at least one extrusion step in the mounting portion on the outer wall of the terminal pole, a labyrinth portion having one or more circumferential projections.
  • extrusion molding step can be performed with simpler tools and higher processing speed than the above-mentioned rolling step.
  • the blank mentioned z. B. cylindrical, frusto-conical or tubular, d. H. already have an internal cavity. If the blank still has no inner cavity, such as. B. in the case of a solid cylinder or truncated cone, the machine is advantageously arranged to be in a first extrusion step, for. B. first with a thin mandrel to form a small central cavity in the blank. The machine is further adapted to expand in a second extrusion step with a larger mandrel the already produced small cavity, which serves in this case at the same time as centering. In the second extrusion step can then take place at the same time the molding of the circumferential projections.
  • the machine is adapted to bead in a subsequent crimping at least two adjacent mutually arranged circumferential projections in pairs umbördeln in facing direction.
  • the terminal pole can alternatively be produced in a casting process.
  • the machine is adapted to mold, by a casting method, a terminal pole having a labyrinth portion with one or more circumferential protrusions on the outer wall of the terminal pole.
  • FIGS. 1 and 2 show respective embodiments of the terminal pole 1, in which it is shown on the right side with not flanged circumferential projections, ie in a state as it is present after a casting or extrusion process of the terminal pole.
  • the same terminal pole 1 is shown after carrying out the crimping process, ie with each beaded circumferential projections in pairs.
  • the FIG. 1 shows a terminal pole 1 in a longitudinal sectional view.
  • the connection pole 1 has a connection section 2, a fastening section 3 and a labyrinth section 4.
  • the terminal pole 1 has in the connection section 2 on its outer side an outer wall 18 and an upper end surface 16.
  • the circumferential projection 14 may also have the teeth explained in more detail below on the outer circumference.
  • An outer wall 6 adjoins the circumferential projection 14 on the outside of the connection pole 1, which is arranged in the labyrinth section 4.
  • the outer wall 6 is interrupted by circumferential projections 70, 71, 72, 73.
  • the terminal pole 1, apart from the teeth, z. B. be formed as a substantially rotationally symmetric component.
  • the terminal pole 1 in the intermediate state shown on the right during manufacture, in which still no circumferential projections 70, 71, 72, 73 are flanged, a pair of adjacent mutually arranged circumferential projections 71, 72 which have an asymmetrical profile and are already aligned slightly towards each other.
  • These circumferential projections 71, 72 are then with a crimping tool, for. B. with a guided around the terminal pole 1 roller burnishing tool, crimped in the nose area, as in the FIG. 1 is shown on the left.
  • the circumferential projections 71, 72 are flanged towards each other, whereby areas 11 have been created with undercut.
  • FIG. 1 shows, by way of example, in the left-hand area of the connection pole 1, a detail of a housing part 5 of the accumulator molded onto the connection pole by injection molding.
  • the terminal pole 1 is embedded in the mounting portion 3 on its outer side in the material of the housing part 5.
  • the terminal pole 1 is hollow on the inside and has a cavity 17.
  • the inner cavity 17 is used for introducing a Polschafts, as below with reference to the FIG. 4 is described.
  • FIG. 2 shows in a comparable view as the FIG. 1 a further embodiment of a terminal pole 1, wherein in contrast to the embodiment according to the FIG. 1 a first pair of circumferential projections 80, 81 and below a second pair of circumferential projections 82, 83 is provided.
  • the pairs 80, 81 and 82, 83 are each comparable to the circumferential projections 71, 72 according to FIG FIG. 1 educated.
  • the pairs 80, 81 and 82, 83 of the circumferential projections each crimped facing each other, whereby a total of four regions 11 are generated with undercuts.
  • the undercuts 11 of a pair of circumferential projections 70, 71, 72, 73, 80, 81, 82, 83 produced by beading are opposed to each other, i. they point to each other.
  • FIG. 3 shows in the FIGS. 3a), 3b) and 3c Different embodiments of the terminal pole 1 in plan view, from the side of the end surface 16. Visible in all three embodiments, the upper end surface 16, the outer side wall 18, the inner cavity 17 and the peripheral projection fourteenth
  • the circumferential projection 14 has an outer toothing, which is represented by teeth 19, 20, 23.
  • teeth 19, 20, 23 By the teeth 19, 20, 23 a twist protection of the terminal pole is realized in the plastic material of the accumulator housing.
  • FIG. 3a An advantageous embodiment in which six teeth 19 are arranged distributed uniformly over the circumference of the terminal pole 1.
  • the FIG. 3b shows an advantageous embodiment with eight evenly distributed over the circumference of the terminal pole 1 arranged teeth 19th
  • the Figure 3c corresponds to the embodiment according to FIG. 3b ), with at Figure 3c ) are provided as an advantageous development of teeth 20, 23 with unbalanced tooth flanks 21, 22.
  • the tooth flank 21 with respect to the outer circumference of the circumferential projection 14 at a smaller angle than the tooth flank 22.
  • the tooth 23 is similar to the tooth 20 formed with asymmetrical tooth flanks.
  • the tooth 23 is arranged mirror-symmetrically to the tooth 20.
  • a labyrinth section having at least one extrusion step in the attachment section on the outer wall of the connection pole is first formed on one blank with one or more encircling projections.
  • a subsequent crimping step which follows the extrusion step directly or indirectly, a pair of flanging of adjacently arranged circumferential projections is performed towards each other.
  • the crimping step may advantageously be performed with a circumferential roller tool 60 which is rolled around the terminal pole 1. In this case, the terminal pole is held in a fixing device. This allows a fast and efficient production of the terminal pole according to the invention.
  • the blank mentioned z. B. cylindrical, frusto-conical or tubular, d. H. already have an internal cavity. If the blank still has no inner cavity, such as. B. in the case of a solid cylinder or truncated cone, the method has at least two extrusion steps.
  • a first extrusion step z. B. formed with a thin mandrel initially a small central cavity in the blank.
  • a second extrusion step the small cavity already produced is then widened with a larger mandrel, which at the same time serves as centering.
  • the second extrusion step can then take place at the same time the molding of the circumferential projections.
  • connection pole 1 can alternatively also be produced in a casting process.
  • FIG. 4 shows a detail of an accumulator 12 with the housing parts battery box 13 and cover part 5.
  • the cover part 5 is placed on the battery box 13.
  • Inside the battery box 13 are electrode plates which form a plate set 40.
  • the plate set 40 is over a
  • Connector 41 with a Polschaft 42 electrically and mechanically connected.
  • the Polschaft 42 is inserted into the inner cavity 17 of the connector 1 and is on the outside of the battery 12 something out of the embedded in the cover part 5 connector socket 1 forth.
  • the Polschaft 42 is designed in this area with a slightly smaller diameter than in the other areas.
  • an annular space between the Polschaft 42 and the connector 1 is formed. This annulus is used for electrical and mechanical connection of the pole shaft 42 with the connector 1, z. B. by welding.

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  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • General Chemical & Material Sciences (AREA)
  • Connection Of Batteries Or Terminals (AREA)
  • Sealing Battery Cases Or Jackets (AREA)

Description

Die Erfindung betrifft einen Anschlusspol für einen Akkumulator gemäß dem Oberbegriff des Anspruchs 1. Die Erfindung betrifft ferner ein Akkumulatorgehäuse oder ein Teil davon mit wenigstens einem derartigen Anschlusspol sowie ein Verfahren zur Herstellung eines derartigen Anschlusspols gemäß dem Anspruch 6.The invention relates to a terminal pole for a rechargeable battery according to the preamble of claim 1. The invention further relates to an accumulator housing or a part thereof with at least one such terminal pole as well as a method for producing such a terminal pole according to claim 6.

Anschlusspole für Akkumulatoren dienen zur elektrischen Kontaktierung des Akkumulators mit elektrischen Einrichtungen, die von dem Akkumulator mit Strom versorgt werden sollen. Im Falle einer Starterbatterie für ein Kraftfahrzeug werden an zwei Anschlusspole der Starterbatterie die entsprechenden Polklemmen geschraubt.Connection poles for accumulators are used to make electrical contact with the accumulator with electrical devices that are to be supplied with power by the accumulator. In the case of a starter battery for a motor vehicle, the corresponding pole terminals are screwed to two terminal poles of the starter battery.

Ein Anschlusspol für einen Akkumulator ist aus der DE 42 41 393 C2 bekannt. Der dortige Anschlusspol weist ein Sockelteil mit umlaufenden Rillen auf, das in einem Gehäuse des Akkumulators einsetzbar ist. Die umlaufenden Rillen bilden zusammen mit einem die Rillen ausfüllenden Kunststoff eine Labyrinthdichtung.A connection pole for an accumulator is from the DE 42 41 393 C2 known. The local terminal pole has a base part with circumferential grooves, which can be used in a housing of the accumulator. The circumferential grooves together with a groove filling plastic a labyrinth seal.

Die Druckschriften DE 10 2010 010 772 A1 und EP 1 768 201 A2 betreffen jeweils einen Anschlusspol für einen Akkumulator. Die aus diesem Stand der Technik bekannten Anschlusspole weisen jeweils einen Befestigungsabschnitt mit einem Labyrinthabschnitt auf, wobei im Labyrinthabschnitt mehrere umlaufende Vorsprünge ausgebildet sind. Diese umlaufenden Vorsprünge weisen jeweils ein hakenförmiges Profil auf.The pamphlets DE 10 2010 010 772 A1 and EP 1 768 201 A2 each relate to a terminal pole for an accumulator. The connection poles known from this prior art each have a fixing section with a labyrinth section, wherein in the labyrinth section a plurality of circumferential Projections are formed. These circumferential projections each have a hook-shaped profile.

Der Erfindung liegt die Aufgabe zu Grunde, einen Anschlusspol, der zur Bildung einer Labyrinthdichtung mit dem Kunststoff geeignet ist, anzugeben, der einfacher und kostengünstiger herzustellen ist.The invention is based on the object, a terminal pole, which is suitable for forming a labyrinth seal with the plastic to specify, which is easier and cheaper to produce.

Diese Aufgabe wird durch die in den Ansprüchen 1 und 6 angegebene Erfindung gelöst. Die Unteransprüche geben vorteilhafte Ausgestaltungen der Erfindung an.This object is achieved by the invention specified in claims 1 and 6. The subclaims indicate advantageous embodiments of the invention.

Gemäß Anspruch 1 wird ein Anschlusspol für einen Akkumulator insbesondere mit folgenden Merkmalen vorgeschlagen:

  1. a) der Anschlusspol weist einen Anschlussabschnitt auf, in dem eine Polklemme am Anschlusspol befestigbar ist,
  2. b) der Anschlusspol weist einen Befestigungsabschnitt auf, in dem der Anschlusspol in einem Gehäuseteil des Akkumulators befestigbar ist,
  3. c) der Befestigungsabschnitt weist einen Labyrinthabschnitt auf,
  4. d) die Außenwand des Anschlusspols weist im Labyrinthabschnitt einen oder mehrere umlaufende Vorsprünge auf,
  5. e) wenigstens zwei benachbart zueinander angeordnete umlaufende Vorsprünge sind paarweise in aufeinander zu weisender Richtung umgebördelt, wobei durch den umgebördelten Bereich ein jeweiliger Hinterschnitt an dem umlaufenden Vorsprung in Bezug auf die Außenwand des Anschlusspols gebildet ist.
According to claim 1, a connection pole for an accumulator is proposed in particular with the following features:
  1. a) the connection pole has a connection section in which a pole terminal can be fastened to the connection pole,
  2. b) the connection pole has a fastening section in which the connection pole can be fastened in a housing part of the accumulator,
  3. c) the attachment section has a labyrinth section,
  4. d) the outer wall of the terminal pole has one or more circumferential projections in the labyrinth section,
  5. e) at least two mutually adjacent circumferential projections are flanged in pairs in a direction facing each other, wherein formed by the flanged portion a respective undercut on the peripheral projection with respect to the outer wall of the terminal pole.

Der Begriff "Abschnitt" bezieht sich dabei auf Abschnitte in Längsrichtung des Anschlusspols, d. h . in Richtung der in Figur 1 dargestellten Längsachse L.The term "section" refers to sections in the longitudinal direction of the terminal pole, d. H . in the direction of in FIG. 1 illustrated longitudinal axis L.

Die Erfindung hat den Vorteil, dass ein Anschlusspol mit einem Labyrinthabschnitt angegeben werden kann, dessen umlaufende Vorsprünge mit einfacheren und damit kostengünstigeren Herstellschritten herstellbar sind. Während es bei dem eingangs genannten Anschlusspol erforderlich ist, die Vorsprünge mit dem hakenförmigen Profil z. B. durch Rollieren bzw. Walzen der entsprechenden Bereiche des Anschlusspols herzustellen, kann beim erfindungsgemäßen Anschlusspol auf solche aufwendigen Maßnahmen verzichtet werden. Somit können einfachere und kostengünstigere Werkzeuge verwendet werden, insbesondere ein Bördelwerkzeug zum paarweisen Umbördeln zweier benachbart angeordneter umlaufender Vorsprünge aufeinander zu. Dadurch, dass jeweils zwei umlaufende Vorsprünge paarweise aufeinander zu umgebördelt werden, kann das Bördelwerkzeug im Wesentlichen längskraftfrei betrieben werden, da sich die entsprechenden Bördelkräfte im Wesentlichen gegeneinander aufheben. Zudem wird gegenüber dem bekannten Herstellverfahren auch Zeit bei der Herstellung des Anschlusspols gespart. All dies führt zu geringeren Herstellungskosten. Hierdurch können auf einfache Weise Hinterschnitte an der Außenwand des Anschlusspols hergestellt werden, die nach Einbettung des Anschlusspols in das Spritzgießmaterial des Akkumulatorgehäuses eine optimale Sperre gegen den Durchtritt von Säure aus dem Akkumulator bilden.The invention has the advantage that a terminal pole can be specified with a labyrinth section whose circumferential projections can be produced with simpler and thus more cost-effective production steps. While it is necessary in the connection pole mentioned above, the projections with the hook-shaped profile z. B. by rolling or rolling the corresponding areas of the terminal pole, can be dispensed with such complex measures in the terminal pole according to the invention. Thus, simpler and less expensive tools can be used, in particular a crimping tool for the pairwise flanging of two adjacently arranged circumferential projections towards each other. Due to the fact that in each case two circumferential projections are flanged in pairs towards each other, the crimping tool can be operated substantially free of longitudinal force, since the corresponding crimping forces cancel each other substantially. In addition, time is saved in the production of the Anschlußpols compared to the known manufacturing process. All this leads to lower production costs. As a result, undercuts can be easily produced on the outer wall of the terminal pole, which form an optimal barrier against the passage of acid from the accumulator after embedding the terminal pole in the injection molding of the accumulator.

Der umgebördelte Bereich des umlaufenden Vorsprungs kann gleichmäßig umgebördelt oder ungleichmäßig umgebördelt sein, z. B. wellenförmig. Besonders günstig ist ein gleichmäßig umgebördelter Bereich des umlaufenden Vor-Sprungs, der einen durchgehenden Ring um die Außenwand des Anschlusspols bildet.The flanged portion of the circumferential projection may be evenly crimped or flattened unevenly, for. B. wavy. Particularly favorable is a uniformly flanged portion of the circumferential pre-jump, which forms a continuous ring around the outer wall of the terminal pole.

Die Erfindung kann vorteilhaft sowohl bei einem Anschlusspol für eine PKW-Batterie als auch für einen Anschlusspol einer NKW-Batterie (für Nutzfahrzeuge) realisiert werden.The invention can be advantageously realized both at a terminal pole for a car battery and for a terminal pole of a commercial vehicle battery (for commercial vehicles).

Der bzw. die umlaufenden Vorsprünge im Labyrinthabschnitt können grundsätzlich mit unterschiedlichen Profilen realisiert sein. Als Grundform für den umlaufenden Vorsprung sei eine ringartige Form genannt. Einer oder mehrere der umlaufenden Vorsprünge können auch ein hakenförmiges Profil aufweisen.The or the circumferential projections in the labyrinth section can in principle be realized with different profiles. As a basic form for the circumferential projection is called a ring-like shape. One or more of the circumferential projections may also have a hook-shaped profile.

Gemäß der Erfindung ist durch das Umbördeln nur ein einziger Hinterschnitt pro umlaufendem Vorsprung erzeugt, d. h. es ergibt sich ein unsymmetrisches Profil des umlaufenden Vorsprungs. Dies ist herstellungs-technisch besonders günstig zu realisieren.According to the invention, only a single undercut per circumferential projection is produced by the beading, d. H. This results in an asymmetrical profile of the circumferential projection. This is manufacturing technology to realize particularly favorable.

Für die kostengünstige Herstellung des Anschlusspols ist es günstig, die umlaufenden Vorsprünge zunächst ohne Hinterschnitte herzustellen. Gemäß einer vorteilhaften Weiterbildung der Erfindung ist daher vorgesehen, dass die wenigstens zwei benachbart zueinander angeordneten umlaufenden Vorsprünge im Übrigen hinterschnittfrei sind, d. h. abgesehen von dem umgebördelten Bereich. Dies erlaubt eine einfache und schnelle Herstellung des Anschlusspols aus einem z.B. zylinderförmigen oder rohrförmigen Rohling des Anschlusspols, in den in einem Fließpressschritt die umlaufenden Vorsprünge zunächst hinterschnittfrei eingebracht werden. Der Anschlusspol kann auch in einem Gießverfahren mit zunächst hinterschnittfreien umlaufenden Vorsprüngen hergestellt werden. Anschließend können durch einen Bördelschritt wenigstens zwei benachbart zueinander angeordnete umlaufende Vorsprünge paarweise in aufeinander zu weisender Richtung umgebördelt werden, wodurch dort ein jeweiliger Hinterschnitt gebildet wird.For the cost-effective production of the terminal pole, it is advantageous to initially produce the circumferential projections without undercuts. According to one advantageous development of the invention is therefore intended that the at least two adjacent mutually arranged circumferential projections are otherwise undercut, ie apart from the flanged area. This allows a simple and rapid production of the terminal pole of a cylindrical or tubular blank of the terminal pole, for example, in which the circumferential projections are first introduced without undercut in an extrusion step. The terminal pole can also be produced in a casting process with initially undercut-free circumferential projections. Subsequently, by means of a flanging step, at least two circumferential projections arranged adjacent to one another can be flanged in pairs in a direction pointing toward one another, whereby a respective undercut is formed there.

Gemäß einer vorteilhaften Weiterbildung der Erfindung sind ein oder zwei weitere umlaufende Vorsprünge in dem Labyrinthabschnitt angeordnet. Das Vorsehen des einen oder der zwei weiteren umlaufenden Vorsprünge hat den Vorteil, dass die Dichtwirkung des Labyrinths verbessert wird. Es hat sich gezeigt, dass eine zu hohe Zahl von umlaufenden Vorsprüngen zu keiner weiteren Verbesserung führt, sondern nur die Herstellkosten erhöht und die Stabilität der umlaufenden Vorsprünge reduziert. Es ist günstig, wenn der Abstand zwischen zwei benachbarten umlaufenden Vorsprüngen bei einem Anschlusspol üblicher Bauart im Bereich von 0,8 bis 2 mm liegt, wobei sich ein Wert von ca. 1,5 mm als optimal herausgestellt hat. Die Abstände sollten nicht zu groß sein, um eine sichere und robuste Einbettung des Anschlusspols in dem Material des Gehäuseteils sicherzustellen. Zu kleine Abstände verschlechtern den Füllgrad der zwischen den umlaufenden Vorsprüngen gebildeten Nuten mit dem Spritzgießmaterial des Gehäuseteils, insbesondere wenn als Material Polypropylen (PP) verwendet wird. Zu geringe Abstände zwischen den umlaufenden Vorsprüngen sind hierbei ungünstig für den Einfließvorgang des Spritzgießmaterials in die Nuten.According to an advantageous embodiment of the invention, one or two further circumferential projections are arranged in the labyrinth section. The provision of the one or two further circumferential projections has the advantage that the sealing effect of the labyrinth is improved. It has been found that an excessive number of circumferential projections does not lead to any further improvement, but only increases the production costs and reduces the stability of the circumferential projections. It is advantageous if the distance between two adjacent circumferential projections in a terminal pole of conventional design is in the range of 0.8 to 2 mm, wherein a value of about 1.5 mm has been found to be optimal. The distances should not be too large to ensure a secure and robust embedding of the terminal pole in the material of the housing part. Too small distances deteriorate the degree of filling of the grooves formed between the circumferential projections with the injection molding of the housing part, in particular when polypropylene (PP) is used as the material. Too small distances between the circumferential projections are in this case unfavorable for the inflow of the injection molding in the grooves.

Gemäß einer vorteilhaften Weiterbildung der Erfindung weist der Anschlusspol in dem Befestigungsabschnitt zwischen dem Anschlussabschnitt und dem Labyrinthabschnitt einen umlaufenden Vorsprung mit einer Verzahnung am Außenumfang auf. Mittels der Verzahnung kann vorteilhaft eine Verdrehsicherung realisiert werden, die ein unerwünschtes Verdrehen des Anschlusspols in dem Material des Akkumulatorgehäuses verhindert. In einer vorteilhaften Weiterbildung der Erfindung weist die Verzahnung eine Anzahl von Zähnen im Bereich von 6 bis 9 auf. Insbesondere hat sich gezeigt, dass eine Anzahl von 8 Zähnen besonders vorteilhaft ist und einen guten Kompromiss zwischen der mechanischen Stabilität der Zähne des Anschlusspols und der Haltbarkeit des Anschlusspols in dem Kunststoffmaterial des Akkumulatorgehäuses ergibt. Eine zu hohe Anzahl von Zähnen führt zwangsläufig zu einer Verkleinerung der Abmessungen der einzelnen Zähne, wodurch die Stabilität der einzelnen Zähne abnimmt. Eine zu geringe Anzahl an Zähnen führt zu einer Abnahme der Wirksamkeit des Verdrehschutzes, da die Haltbarkeit des Anschlusspols im Kunststoffmaterial des Akkumulatorgehäuses abnimmt.According to an advantageous embodiment of the invention, the terminal pole in the attachment portion between the terminal portion and the labyrinth portion on a circumferential projection with a toothing on the outer circumference. By means of the toothing can advantageously be realized against rotation, which prevents unwanted rotation of the terminal pole in the material of the accumulator housing. In an advantageous development of the invention, the toothing has a number of teeth in the range from 6 to 9. In particular, it has been found that a number of 8 teeth is particularly advantageous and gives a good compromise between the mechanical stability of the teeth of the terminal pole and the durability of the terminal pole in the plastic material of the accumulator housing. An excessive number of teeth inevitably leads to a reduction in the dimensions of the individual teeth, whereby the stability of the individual teeth decreases. Too small a number of teeth leads to a decrease in the effectiveness of the anti-rotation, since the durability of the terminal pole decreases in the plastic material of the accumulator.

Die Erfindung betrifft ferner ein Akkumulatorgehäuse oder Teil davon mit wenigstens einem Anschlusspol der zuvor beschriebenen Art, wobei der wenigstens eine Anschlusspol mit seinem Befestigungsabschnitt mittels Spritzgießtechnik in einem Akkumulatorgehäuseteil eingebettet ist.The invention further relates to an accumulator housing or part thereof with at least one connection pole of the type described above, wherein the at least one terminal pole is embedded with its attachment portion by means of injection molding in a Akkumulatorgehäuseteil.

Ferner betrifft die Erfindung eine Maschine zur Herstellung eines Anschlusspols der zuvor beschriebenen Art. Die Maschine ist dazu eingerichtet, an einem Rohling durch wenigstens einen Fließpressschritt in dem Befestigungsabschnitt an der Außenwand des Anschlusspols einen Labyrinthabschnitt mit einem oder mehreren umlaufenden Vorsprüngen anzuformen. Ein solcher Fließpressschritt kann mit einfacheren Werkzeugen und höherer Verarbeitungsgeschwindigkeit durchgeführt werden als der eingangs erwähnte Rollierschritt.The invention further relates to a machine for producing a terminal pole of the type described above. The machine is adapted to form on a blank by at least one extrusion step in the mounting portion on the outer wall of the terminal pole, a labyrinth portion having one or more circumferential projections. Such extrusion molding step can be performed with simpler tools and higher processing speed than the above-mentioned rolling step.

Der genannte Rohling kann z. B. zylinderförmig, kegelstumpfförmig oder rohrförmig sein, d. h. bereits einen inneren Hohlraum aufweisen. Sofern der Rohling noch keinen inneren Hohlraum aufweist, wie z. B. im Falle eines massiven Zylinders oder Kegelstumpfes, ist die Maschine vorteilhafterweise dazu eingerichtet, in einem ersten Fließpressschritt z. B. mit einem dünnen Dorn zunächst einen kleinen zentralen Hohlraum in dem Rohling einzuformen. Die Maschine ist ferner dazu eingerichtet, in einem zweiten Fließpressschritt mit einem größeren Dorn den bereits hergestellten kleinen Hohlraum aufzuweiten, der hierbei zugleich als Zentrierung dient. In dem zweiten Fließpressschritt kann dann zugleich die Anformung der umlaufenden Vorsprünge erfolgen.The blank mentioned z. B. cylindrical, frusto-conical or tubular, d. H. already have an internal cavity. If the blank still has no inner cavity, such as. B. in the case of a solid cylinder or truncated cone, the machine is advantageously arranged to be in a first extrusion step, for. B. first with a thin mandrel to form a small central cavity in the blank. The machine is further adapted to expand in a second extrusion step with a larger mandrel the already produced small cavity, which serves in this case at the same time as centering. In the second extrusion step can then take place at the same time the molding of the circumferential projections.

Gemäß einer vorteilhaften Weiterbildung der Erfindung ist die Maschine dazu eingerichtet, in einem nachfolgenden Bördelschritt wenigstens zwei benachbart zueinander angeordnete umlaufende Vorsprünge paarweise in aufeinander zu weisender Richtung umzubördeln.According to an advantageous embodiment of the invention, the machine is adapted to bead in a subsequent crimping at least two adjacent mutually arranged circumferential projections in pairs umbördeln in facing direction.

Der Anschlusspol kann alternativ auch in einem Gießverfahren hergestellt werden. In diesem Fall ist die Maschine ist dazu eingerichtet, durch ein Gießverfahren einen Anschlusspol mit einem Labyrinthabschnitt mit einem oder mehreren umlaufenden Vorsprüngen an der Außenwand des Anschlusspols zu formen.The terminal pole can alternatively be produced in a casting process. In this case, the machine is adapted to mold, by a casting method, a terminal pole having a labyrinth portion with one or more circumferential protrusions on the outer wall of the terminal pole.

Die Erfindung wird nachfolgend anhand von Ausführungsbeispielen unter Verwendung von Zeichnungen näher erläutert.The invention will be explained in more detail by means of embodiments using drawings.

Es zeigen

Figur 1
- einen Anschlusspol in Schnittdarstellung in Längsrichtung und
Figur 2
- eine weitere Ausführungsform eines Anschlusspols in einer Schnittdarstellung in Längsrichtung und
Figur 3
- Ausführungsformen des Anschlusspols gemäß den Figuren 1 bis 2 in Draufsicht und
Figur 4
- einen Akkumulator mit einem Anschlusspol in Schnittdarstellung.
Show it
FIG. 1
- A terminal pole in a sectional view in the longitudinal direction and
FIG. 2
- Another embodiment of a terminal pole in a longitudinal sectional view and
FIG. 3
- Embodiments of the terminal pole according to the FIGS. 1 to 2 in plan view and
FIG. 4
- An accumulator with a terminal pole in a sectional view.

In den Figuren werden gleiche Bezugszeichen für einander entsprechende Elemente verwendet.In the figures, like reference numerals are used for corresponding elements.

Die Figuren 1 und 2 zeigen jeweilige Ausführungsformen des Anschlusspols 1, in denen dieser auf der rechten Seite mit noch nicht umgebördelten umlaufenden Vorsprüngen dargestellt ist, d. h. in einem Zustand, wie er nach einem Gießvorgang oder Fließpressvorgang des Anschlusspols vorliegt. Auf der jeweils linken Seite in den Figuren 1 und 2 ist derselbe Anschlusspol 1 nach Durchführung des Bördelvorgangs dargestellt, d. h. mit jeweils paarweise umgebördelten umlaufenden Vorsprüngen.The FIGS. 1 and 2 show respective embodiments of the terminal pole 1, in which it is shown on the right side with not flanged circumferential projections, ie in a state as it is present after a casting or extrusion process of the terminal pole. On the left side in each case FIGS. 1 and 2 the same terminal pole 1 is shown after carrying out the crimping process, ie with each beaded circumferential projections in pairs.

Die Figur 1 zeigt einen Anschlusspol 1 in einer in Längsrichtung geschnittenen Darstellung. Der Anschlusspol 1 weist einen Anschlussabschnitt 2, einen Befestigungsabschnitt 3 und einen Labyrinthabschnitt 4 auf. Der Anschlusspol 1 weist im Anschlussabschnitt 2 an seiner Außenseite eine Außenwand 18 und eine obere Abschlussfläche 16 auf. An der Außenseite des Anschlusspols 1 ist in dem Befestigungsabschnitt 3, angrenzend an den Anschlussabschnitt 2, ein umlaufender Vorsprung 14 angeordnet, der z. B. eine Ringform aufweisen kann. Der umlaufende Vorsprung 14 kann auch die nachfolgend noch näher erläuterte Verzahnung am Außenumfang aufweisen. An den umlaufenden Vorsprung 14 schließt sich eine Außenwand 6 an der Außenseite des Anschlusspols 1 an, die in dem Labyrinthabschnitt 4 angeordnet ist. Die Außenwand 6 ist durch umlaufende Vorsprünge 70, 71, 72, 73 unterbrochen. Der Anschlusspol 1 kann, abgesehen von der Verzahnung, z. B. als ein im Wesentlichen rotationssymmetrisches Bauteil ausgebildet sein.The FIG. 1 shows a terminal pole 1 in a longitudinal sectional view. The connection pole 1 has a connection section 2, a fastening section 3 and a labyrinth section 4. The terminal pole 1 has in the connection section 2 on its outer side an outer wall 18 and an upper end surface 16. On the outer side of the terminal pole 1, a circumferential projection 14 is disposed in the mounting portion 3, adjacent to the connection portion 2, the z. B. may have a ring shape. The circumferential projection 14 may also have the teeth explained in more detail below on the outer circumference. An outer wall 6 adjoins the circumferential projection 14 on the outside of the connection pole 1, which is arranged in the labyrinth section 4. The outer wall 6 is interrupted by circumferential projections 70, 71, 72, 73. The terminal pole 1, apart from the teeth, z. B. be formed as a substantially rotationally symmetric component.

Wie in der Figur 1 erkennbar ist, weist der Anschlusspol 1 in dem rechts dargestellten Zwischenzustand während der Herstellung, bei der noch keine umlaufenden Vorsprünge 70, 71, 72, 73 umgebördelt sind, ein Paar von benachbart zueinander angeordneten umlaufenden Vorsprüngen 71, 72 auf, die ein unsymmetrisches Profil aufweisen und bereits leicht aufeinander zu ausgerichtet sind. Diese umlaufenden Vorsprünge 71, 72 werden dann mit einem Bördelwerkzeug, z. B. mit einem um den Anschlusspol 1 herumgeführten Rollierwerkzeug, im Nasenbereich umgebördelt, wie in der Figur 1 links wiedergegeben ist. Dort ist erkennbar, dass die umlaufenden Vorsprünge 71, 72 aufeinander zu umgebördelt sind, wodurch Bereiche 11 mit Hinterschnitt entstanden sind. In den Hinterschnitten 11 kann sich beim Einbetten des Anschlusspols in das Material des Akkumulatorgehäuses das Spritzgießmaterial sammeln, wodurch eine besonders gute Abdichtung erzielt wird. Die Figur 1 zeigt beispielhaft im linken Bereich des Anschlusspols 1 ausschnittsweise ein im Spritzgießverfahren an den Anschlusspol angeformtes Gehäuseteil 5 des Akkumulators. Wie erkennbar ist, ist der Anschlusspol 1 in dem Befestigungsabschnitt 3 an seiner Außenseite in dem Material des Gehäuseteils 5 eingebettet. Durch die umlaufenden Vorsprünge 70, 71, 72, 73 wird ein Labyrinth gebildet, das für eine gute Abdichtung des Inneren des Akkumulators gegenüber der Umgebung sorgt.Like in the FIG. 1 can be seen, the terminal pole 1 in the intermediate state shown on the right during manufacture, in which still no circumferential projections 70, 71, 72, 73 are flanged, a pair of adjacent mutually arranged circumferential projections 71, 72 which have an asymmetrical profile and are already aligned slightly towards each other. These circumferential projections 71, 72 are then with a crimping tool, for. B. with a guided around the terminal pole 1 roller burnishing tool, crimped in the nose area, as in the FIG. 1 is shown on the left. There it can be seen that the circumferential projections 71, 72 are flanged towards each other, whereby areas 11 have been created with undercut. In the undercuts 11, when injecting the terminal pole into the material of the accumulator housing, the injection molding material can accumulate, whereby a particularly good sealing is achieved. The FIG. 1 shows, by way of example, in the left-hand area of the connection pole 1, a detail of a housing part 5 of the accumulator molded onto the connection pole by injection molding. As can be seen, the terminal pole 1 is embedded in the mounting portion 3 on its outer side in the material of the housing part 5. By the circumferential projections 70, 71, 72, 73, a labyrinth is formed, which ensures a good seal of the interior of the accumulator to the environment.

Der Anschlusspol 1 ist innen hohl ausgebildet und weist einen Hohlraum 17 auf. Der innere Hohlraum 17 dient zum Einführen eines Polschafts, wie nachfolgend noch anhand der Figur 4 beschrieben wird.The terminal pole 1 is hollow on the inside and has a cavity 17. The inner cavity 17 is used for introducing a Polschafts, as below with reference to the FIG. 4 is described.

Die Figur 2 zeigt in vergleichbarer Ansicht wie die Figur 1 eine weitere Ausführungsform eines Anschlusspols 1, bei dem im Unterschied zu der Ausführungsform gemäß der Figur 1 ein erstes Paar umlaufender Vorsprünge 80, 81 und darunter ein zweites Paar umlaufender Vorsprünge 82, 83 vorgesehen ist. Die Paare 80, 81 bzw. 82, 83 sind jeweils vergleichbar wie die umlaufenden Vorsprünge 71, 72 gemäß Figur 1 ausgebildet. Wie in der Figur 2 links erkennbar ist, werden durch ein schematisch dargestelltes Bördelwerkzeug 60, z. B. in Form eines Rollierwerkzeugs, die Paare 80, 81 bzw. 82, 83 der umlaufenden Vorsprünge jeweils aufeinander zu weisend umgebördelt, wodurch insgesamt vier Bereiche 11 mit Hinterschnitten erzeugt werden.The FIG. 2 shows in a comparable view as the FIG. 1 a further embodiment of a terminal pole 1, wherein in contrast to the embodiment according to the FIG. 1 a first pair of circumferential projections 80, 81 and below a second pair of circumferential projections 82, 83 is provided. The pairs 80, 81 and 82, 83 are each comparable to the circumferential projections 71, 72 according to FIG FIG. 1 educated. Like in the FIG. 2 can be seen on the left are, by a schematically illustrated crimping tool 60, z. B. in the form of a roller burnishing tool, the pairs 80, 81 and 82, 83 of the circumferential projections each crimped facing each other, whereby a total of four regions 11 are generated with undercuts.

In allen Ausführungsformen sind die durch das Umbördeln hergestellten Hinterschnitte 11 eines Paars von umlaufenden Vorsprüngen 70, 71, 72, 73, 80, 81, 82, 83 einander gegenüberliegend, d.h. sie weisen aufeinander zu.In all embodiments, the undercuts 11 of a pair of circumferential projections 70, 71, 72, 73, 80, 81, 82, 83 produced by beading are opposed to each other, i. they point to each other.

Die Figur 3 zeigt in den Figuren 3a), 3b) und 3c) verschiedene Ausführungsformen des Anschlusspols 1 in Draufsicht, und zwar von der Seite der Abschlussfläche 16. Erkennbar ist in allen drei Ausführungsformen die obere Abschlussfläche 16, die äußere Seitenwand 18, der innere Hohlraum 17 sowie der umlaufende Vorsprung 14.The FIG. 3 shows in the FIGS. 3a), 3b) and 3c Different embodiments of the terminal pole 1 in plan view, from the side of the end surface 16. Visible in all three embodiments, the upper end surface 16, the outer side wall 18, the inner cavity 17 and the peripheral projection fourteenth

Der umlaufende Vorsprung 14 weist eine äußere Verzahnung auf, die durch Zähne 19, 20, 23 dargestellt ist. Durch die Zähne 19, 20, 23 wird ein Verdrehschutz des Anschlusspols in dem Kunststoffmaterial des Akkumulatorgehäuses realisiert. Hierbei zeigt die Figur 3a) eine vorteilhafte Ausführungsform, bei der sechs Zähne 19 gleichmäßig über den Umfang des Anschlusspols 1 verteilt angeordnet sind. Die Figur 3b) zeigt eine vorteilhafte Ausführungsform mit acht über den Umfang des Anschlusspols 1 gleichmäßig verteilt angeordneten Zähnen 19.The circumferential projection 14 has an outer toothing, which is represented by teeth 19, 20, 23. By the teeth 19, 20, 23 a twist protection of the terminal pole is realized in the plastic material of the accumulator housing. This shows the FIG. 3a ) An advantageous embodiment in which six teeth 19 are arranged distributed uniformly over the circumference of the terminal pole 1. The FIG. 3b ) shows an advantageous embodiment with eight evenly distributed over the circumference of the terminal pole 1 arranged teeth 19th

Die Figur 3c) entspricht soweit der Ausführungsform gemäß Figur 3b), wobei bei Figur 3c) als vorteilhafte Weiterbildung Zähne 20, 23 mit unsymmetrischen Zahnflanken 21, 22 vorgesehen sind. So weist die Zahnflanke 21 bezüglich des Außenumfangs des umlaufenden Vorsprungs 14 einen geringeren Winkel auf als die Zahnflanke 22. Der Zahn 23 ist vergleichbar wie der Zahn 20 mit unsymmetrischen Zahnflanken ausgebildet. Hierbei ist der Zahn 23 spiegelsymmetrisch zu dem Zahn 20 angeordnet. Durch die mit geringerem Winkel ausgebildeten Zahnflanken 21 wird die Möglichkeit geschaffen, den Anschlusspol mittels einer Backenform herzustellen. Beim Entformen können die Backen hierdurch ohne weiteres von dem Anschlusspol getrennt werden, da in Trennrichtung kein Hinterschnitt auftritt.The Figure 3c ) corresponds to the embodiment according to FIG. 3b ), with at Figure 3c ) are provided as an advantageous development of teeth 20, 23 with unbalanced tooth flanks 21, 22. Thus, the tooth flank 21 with respect to the outer circumference of the circumferential projection 14 at a smaller angle than the tooth flank 22. The tooth 23 is similar to the tooth 20 formed with asymmetrical tooth flanks. Here, the tooth 23 is arranged mirror-symmetrically to the tooth 20. By formed with a smaller angle tooth flanks 21 the possibility is created to produce the terminal pole by means of a jaw mold. When removing the molds can thereby be easily separated from the terminal pole, as in the separation direction no undercut occurs.

Bei einem Verfahren zur Herstellung eines Anschlusspols wird an einem Rohling zunächst durch wenigstens einen Fließpressschritt in dem Befestigungsabschnitt an der Außenwand des Anschlusspols ein Labyrinthabschnitt mit einem oder mehreren umlaufenden Vorsprüngen angeformt. In einem nachfolgenden Bördelschritt, der auf den Fließpressschritt unmittelbar oder mittelbar folgt, wird eine paarweise Umbördelung von benachbart angeordneten umlaufenden Vorsprüngen aufeinander zu durchgeführt. Der Bördelschritt kann vorteilhaft mit einem umlaufenden Rolierwerkzeug 60 durchgeführt werden, das um den Anschlusspol 1 herum gerollt wird. Hierbei wird der Anschlusspol in einer Fixiereinrichtung gehalten. Dies erlaubt eine schnelle und rationelle Fertigung des erfindungsgemäßen Anschlusspols.In a method for producing a connection pole, a labyrinth section having at least one extrusion step in the attachment section on the outer wall of the connection pole is first formed on one blank with one or more encircling projections. In a subsequent crimping step, which follows the extrusion step directly or indirectly, a pair of flanging of adjacently arranged circumferential projections is performed towards each other. The crimping step may advantageously be performed with a circumferential roller tool 60 which is rolled around the terminal pole 1. In this case, the terminal pole is held in a fixing device. This allows a fast and efficient production of the terminal pole according to the invention.

Der genannte Rohling kann z. B. zylinderförmig, kegelstumpfförmig oder rohrförmig sein, d. h. bereits einen inneren Hohlraum aufweisen. Sofern der Rohling noch keinen inneren Hohlraum aufweist, wie z. B. im Falle eines massiven Zylinders oder Kegelstumpfes, weist das Verfahren wenigstens zwei Fließpressschritte auf. In einem ersten Fließpressschritt wird z. B. mit einem dünnen Dorn zunächst ein kleiner zentraler Hohlraum in dem Rohling eingeformt. In einem zweiten Fließpressschritt wird dann mit einem größeren Dorn der bereits hergestellte kleine Hohlraum aufgeweitet, der hierbei zugleich als Zentrierung dient. In dem zweiten Fließpressschritt kann dann zugleich die Anformung der umlaufenden Vorsprünge erfolgen.The blank mentioned z. B. cylindrical, frusto-conical or tubular, d. H. already have an internal cavity. If the blank still has no inner cavity, such as. B. in the case of a solid cylinder or truncated cone, the method has at least two extrusion steps. In a first extrusion step z. B. formed with a thin mandrel initially a small central cavity in the blank. In a second extrusion step, the small cavity already produced is then widened with a larger mandrel, which at the same time serves as centering. In the second extrusion step can then take place at the same time the molding of the circumferential projections.

Der Anschlusspol 1 kann alternativ auch in einem Gießprozess hergestellt werden.The connection pole 1 can alternatively also be produced in a casting process.

Die Figur 4 zeigt ausschnittsweise einen Akkumulator 12 mit den Gehäuseteilen Batteriekasten 13 und Deckelteil 5. Das Deckelteil 5 wird auf den Batteriekasten 13 aufgesetzt. Im Inneren des Batteriekastens 13 befinden sich Elektrodenplatten, die einen Plattensatz 40 bilden. Der Plattensatz 40 ist über einenThe FIG. 4 shows a detail of an accumulator 12 with the housing parts battery box 13 and cover part 5. The cover part 5 is placed on the battery box 13. Inside the battery box 13 are electrode plates which form a plate set 40. The plate set 40 is over a

Verbinder 41 mit einem Polschaft 42 elektrisch und mechanisch verbunden. Wie erkennbar ist, ist der Polschaft 42 in den inneren Hohlraum 17 der Anschlussbuchse 1 eingeführt und steht auf der Außenseite des Akkumulators 12 etwas aus der im Deckelteil 5 eingebetteten Anschlussbuchse 1 hervor. Der Polschaft 42 ist in diesem Bereich mit einem etwas geringeren Durchmesser ausgeführt als in den übrigen Bereichen. Hierdurch wird ein ringförmiger Raum zwischen dem Polschaft 42 und der Anschlussbuchse 1 gebildet. Dieser Ringraum dient zur elektrischen und mechanischen Verbindung des Polschafts 42 mit der Anschlussbuchse 1, z. B. durch Verschweißen.Connector 41 with a Polschaft 42 electrically and mechanically connected. As can be seen, the Polschaft 42 is inserted into the inner cavity 17 of the connector 1 and is on the outside of the battery 12 something out of the embedded in the cover part 5 connector socket 1 forth. The Polschaft 42 is designed in this area with a slightly smaller diameter than in the other areas. As a result, an annular space between the Polschaft 42 and the connector 1 is formed. This annulus is used for electrical and mechanical connection of the pole shaft 42 with the connector 1, z. B. by welding.

Claims (6)

  1. A connecting pole (1) for a rechargeable battery (12) having the following features:
    a) the connecting pole (1) comprising a connecting section (12) in which a pole terminal can be attached to the connecting pole (1),
    b) the connecting pole (1) comprising an attachment section (3) in which the connecting pole (1) can be attached in a housing section (5) of the rechargeable battery (12),
    c) the attachment section (3) comprising a labyrinth section (4),
    d) the outer wall (6) of the connecting pole (1) comprising one or more circumferential projections (70, 71, 72, 73, 80, 81, 82, 83) in the labyrinth section (4),
    characterized in that
    e) at least two adjacently arranged circumferential projections (70, 71, 72, 73, 80, 81, 82, 83) are flanged in pairs in the mutually facing direction, wherein the flanged region forms a respective undercut (11) relative to the outer wall (6) of the connecting pole (1) on each circumferential projection (70, 71, 72, 73, 80, 81, 82, 83),
    wherein the flanging produces only one single undercut (11) per circumferential projection (70, 71, 72, 73, 80, 81, 82, 83), resulting in the circumferential projection exhibiting an asymmetrical profile.
  2. The connecting pole according to claim 1,
    wherein the undercuts (11) produced by flanging a pair of circumferential projections (70, 71, 72, 73, 80, 81, 82, 83) are disposed opposite one another.
  3. The connecting pole according to claim 1 or 2,
    wherein at least one non-flanged circumferential projection (70, 71, 72, 73, 80, 81, 82, 83) is in each case arranged above and/or below a pair of flanged circumferential projections (70, 71, 72, 73, 80, 81, 82, 83).
  4. The connecting pole according to any one of the preceding claims,
    wherein two pairs of flanged circumferential projections (70, 71, 72, 73, 80, 81, 82, 83) are adjacently arranged in each case.
  5. A rechargeable battery housing (5, 13) or section (5) thereof comprising at least one connecting pole (1) according to any one of the preceding claims, wherein the at least one connecting pole (1) along with its attachment section (3) is embedded in a rechargeable battery housing section (5) by injection molding.
  6. A method for manufacturing a connecting pole (1), particularly a connecting pole (1) as claimed in any one of claims 1 to 4, wherein the method comprises the following method steps:
    a) preparing a cylindrical or tubular blank of the connecting pole;
    b) introducing at least two adjacently arranged circumferential and non-undercut projections in an extrusion press step or casting process; and
    c) flanging at least two adjacently arranged circumferential projections in the mutually facing direction in pairs so as to form a respective undercut,
    wherein the flanging produces only one single undercut (11) per circumferential projection (70, 71, 72, 73, 80, 81, 82, 83), resulting in the circumferential projection exhibiting an asymmetrical profile.
EP12787660.5A 2011-10-25 2012-10-16 Connecting pole for a rechargeable battery, rechargeable battery housing and machine for producing a connecting pole Active EP2771923B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011054773A DE102011054773A1 (en) 2011-10-25 2011-10-25 Connection pole for a rechargeable battery, accumulator housing and machine for the production of a connection pole
PCT/EP2012/070440 WO2013060596A1 (en) 2011-10-25 2012-10-16 Connecting pole for a rechargeable battery, rechargeable battery housing and machine for producing a connecting pole

Publications (2)

Publication Number Publication Date
EP2771923A1 EP2771923A1 (en) 2014-09-03
EP2771923B1 true EP2771923B1 (en) 2017-04-12

Family

ID=47191700

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12787660.5A Active EP2771923B1 (en) 2011-10-25 2012-10-16 Connecting pole for a rechargeable battery, rechargeable battery housing and machine for producing a connecting pole

Country Status (5)

Country Link
US (3) US10003066B2 (en)
EP (1) EP2771923B1 (en)
CN (1) CN104285313B (en)
DE (1) DE102011054773A1 (en)
WO (1) WO2013060596A1 (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011054773A1 (en) 2011-10-25 2013-04-25 Vb Autobatterie Gmbh & Co. Kgaa Connection pole for a rechargeable battery, accumulator housing and machine for the production of a connection pole
WO2019081007A1 (en) * 2017-10-25 2019-05-02 Johnson Controls Advanced Power Solutions Gmbh Connection pole for a rechargeable battery and rechargeable-battery housing
DE102018131385A1 (en) * 2018-12-07 2020-06-10 Clarios Germany Gmbh & Co. Kgaa CONNECTING POLE FOR A ACCUMULATOR AND ACCUMULATOR HOUSING
CN116780086A (en) * 2022-03-08 2023-09-19 宁德新能源科技有限公司 Electrochemical device and electronic apparatus

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DE1671999B1 (en) * 1967-11-11 1971-11-25 Varta Ag POLD LEAD-IN IN THE FORM OF A LEAD SOCKET WITH ONE OR MORE LABYRIN RINGS
US5523671A (en) * 1991-02-14 1996-06-04 Dell Usa, L.P. Charging system for battery powered devices
DE4241393C2 (en) 1992-12-09 1999-05-27 Dionys Hofmann Gmbh Connection pole for an accumulator
JP4000551B2 (en) * 2000-07-07 2007-10-31 リコープリンティングシステムズ株式会社 Image forming apparatus
JP2002075328A (en) * 2000-09-04 2002-03-15 Japan Storage Battery Co Ltd Sealed lead-acid battery
US6644084B1 (en) * 2001-06-14 2003-11-11 Tulip Corporation Method and apparatus for manufacturing a battery terminal with undercut rings
US7163763B2 (en) * 2002-06-04 2007-01-16 Tulip Corporation Cold formed battery terminal
US8701743B2 (en) 2004-01-02 2014-04-22 Water Gremlin Company Battery parts and associated systems and methods
US7338539B2 (en) * 2004-01-02 2008-03-04 Water Gremlin Company Die cast battery terminal and a method of making
DE102005046256B4 (en) * 2005-09-27 2010-09-30 Vb Autobatterie Gmbh & Co. Kgaa Lead-acid battery and plastic battery cover for this purpose
CN100541865C (en) * 2006-09-21 2009-09-16 伍必翔 The electric core conductive connection structure of serondary lithium battery
EP2425478B1 (en) * 2009-04-30 2018-10-31 Water Gremlin Company Battery parts having retaining and sealing features and associated methods of manufacture and use
DE102010010772B4 (en) * 2010-03-09 2015-02-05 Vb Autobatterie Gmbh & Co. Kgaa Connection pole for an accumulator and accumulator housing
DE102011054773A1 (en) 2011-10-25 2013-04-25 Vb Autobatterie Gmbh & Co. Kgaa Connection pole for a rechargeable battery, accumulator housing and machine for the production of a connection pole
AU2017285813B2 (en) 2016-06-17 2020-02-06 Daewoong Pharmaceutical Co., Ltd. Method for producing diphenylmethane derivative

Also Published As

Publication number Publication date
WO2013060596A1 (en) 2013-05-02
DE102011054773A1 (en) 2013-04-25
US10340496B2 (en) 2019-07-02
US11196130B2 (en) 2021-12-07
US10003066B2 (en) 2018-06-19
US20150030904A1 (en) 2015-01-29
EP2771923A1 (en) 2014-09-03
US20190296318A1 (en) 2019-09-26
US20180269462A1 (en) 2018-09-20
CN104285313A (en) 2015-01-14
CN104285313B (en) 2017-08-04

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